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An extract from 1980 Plessey Frequency Synthesis IC Handbook, Plessey Semiconductors, SEPTEMBER 1980 {pgs. 61-64}

" 1. Product Information
…
Using a calculator to find the division numbers of the NJ8811 and NJ8812
Programming the NJ8811
The NJ8811 requires a sixteen bit binary address to program the division number …
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If a Hewlett Packard 25 or equivalent calculator is available the following program (Table 2) may be used to obtain the decimal equivalent directly from the frequency and channel spacing … pg. 62
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Programming the NJ8812
The NJ8812 requires a fourteen bit binary address to program the division number …
…
If a Hewlett Packard 25 or equivalent calculator is available the following program may be used to obtain the Decimal equivalent directly from the frequency and channel spacing … pgs. 63-64 … "

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